.w {
    width: 80%;
    max-width: 1365px;
    margin:  0 auto;
}
.warpBox {
    min-height: 100vh;
    background-repeat: repeat-y;
    background-size: 100%;
    background-image: url(../images/img/about_bg.png);
    padding-bottom: 9.2857rem;
}
.content_1 {
    padding-top: 2.5rem;
    font-size: 18px;
    line-height: 30px;
    text-indent: 1em;
    color: #212121;
}
.content_1>p {
    margin-bottom: 2.8571rem;
}
.content_2 {
    justify-content: space-between;
}
.content_2 .item {
    position: relative;
    width: 47%;
    margin-bottom: 60px;
}
.content_2 img {
    width: 100%;
    display: block;
}
.content_2 .content {
    height: 25%;
    position: absolute;
    bottom: 0;
    width: 100%;
    font-size: 24px;
    transition: all .2s;
    color: #fff;
    padding: 30px 0;
    background-color: rgba(20, 20, 20, 0.66);
}
.none {
    display: none;
}
.content_2 .item:hover .content {
    height: 100%;
    transition: all .3s;
}
.content_2 .item:hover .none {
    display: block;
    padding: 20px;
    line-height: 24px;
}
@media (max-width:1200px) {
    .content_2 .content {
        padding: 16px;
    }
}
@media (max-width:800px) {
    .content_2 .item {
        width: 90%;
    }
    .content_2 .content {
        padding: 12px;
        font-size: 14px;
    }
    .content_2 {
        justify-content: center;
        align-items: center;
    }
}